In NORMAL and COAST mode a single rotary control sets the brake strength from full to a gentle action.

If the Brake control is turned all the way anti-clockwise for minimum brakes, but the car still stops too quickly (for example, a high magnet-force HO car, or car that slows rapidly even with no brakes), then the Coast mode can be selected. (Details in the next section)

The COAST and NORM select switch is located on the rear fascia under the LAUNCH button. (The switch is recessed so that it can't be accidentally switched during a race)

In NORMAL mode this control sets the rate of acceleration. The idea is that even though the trigger may have been snatched quickly to full throttle, the controller will only feed power to the car at the rate set by this control. This prevents wasted time during wheel spinning and loss of traction as you exit a corner, or the guide lifting out of the slot with powerful motors.

In COAST mode this control becomes a Brake Simulation adjustment suitable for those cars that stop almost immediately even with no brakes applied. The idea is that though the trigger has been released, the power decreases at a rate set by this control. Once the controller is no longer feeding power the normal brakes will be applied at the rate you have set under BRAKE CONTROL as above. (For these cars this BRAKE will usually be set to minimum)

This adjusts the trigger wiper sensitivity to enable you to set the controller feel for any car or track condition. For those used to resistor controllers, it will feel as if the Ohms are adjustable from about 15 up to 70. There is a built-in CURVE control circuit (similar to the PWM controller) which works automatically together with the sensitivity adjustment to give quick and easy settings. As the Sensitivity is turned up, so the initial start speed also rises slightly to match.

The little blue preset adjustment on the right hand side of the wiper element provides an adjustment for the range of the function set on the contact board via the solder bridges. For details on this see ContactBoard 10.

If the THROW ADJUSTMENT option has been fitted, then, when the trigger is released for braking, it only goes back as far as your throw adjustment has been set, so the start speed can be made quite high with a combination of these controls.

LAUNCH Switch:

While pressed IN, this switch cuts the feed to the car and motor, even if the trigger is pulled. Once released the power feeds in at whatever point the trigger has been pulled to, but at the rate set by the ACCELERATION control. The idea is that your trigger is already pulled in on the start line so that all you need to do is release the switch to give you a quicker start from the line.

Trigger Return Spring Tension and Optional Throw Adjustments:

Spring Tension: Under the Trigger is the adjustment Screw. It operates against a cam arm that pulls the return spring. Turn clockwise to increase tension and anti-clockwise to reduce it. (you can see it work through the clear handle)

Throw Adjust:Through the access hole in the rear fascia is the throw adjustment screw. This sets the position that the trigger returns to when released for braking. Turn clockwise to move the stop point further in. (you will see the trigger move as you screw it in and out) The adjustment sets the amount of travel for the trigger by moving the position of the Brake contact. The further in you set it, the higher the start-up speed of the car, because, as the brake releases, the trigger is already some way across the element.

Power LED :

LED Power Indicator. (BLUE for POSITIVE WIRED Track and RED for NEGATIVE WIRED Track.)

The LED extinguishes when the relay energises and full power is delivered to the car

The Dual Polarity Board will handle motor stall currents of about 8A. (This is the high current used when the slot car is stationary and builds up to high speed in a short space of time.) The running current is rated at 3A.

There is an auto re-setting fuse in the power feed to the drive Mosfet that will cut the power if the average current use is too high for too long a period.

High Power Board option is either Positive or Negative wired according to customer request and this will handle 20A peak with 8A running current. For this option a T10A fuse is fitted.

Undo the handle casing screws and remove the casings. On the back of the main Board is the Power Drive Board.

Undo the 3 M2 nuts using an M4 Nut wrench and unplug the Power Board. (it will slide over the threaded sections as the 4 pins unplug from the socket.)

Plug in the replacement board (or the High Power Board option) and secure it again with the 3 M2 Nuts.

Additional images for this product show the power board both in place and removed, showing the nuts and driver.

Maintenance:

Once you feel a scratchy operation or can hear squeaking then it is advisable to apply a small amount of the lighter fluid, or something similar,onto a cotton bud and through the air flow slots in the casing, gently wipe over the contacts on the board.

Be sure not to bend the cable at the exit of the handle. The wiring will break from metal fatigue after a while and cause intermittent operation. Wind the cable into a gentle coil and it will last.